There are hundreds of basins which still stand at their beginnings of petroleum exploration in China, so methodology research of early stage basin evaluation is of momentous current significance. The paper discusses systematically the integrated research method of basin boundary, which is very important in the early stage evaluation of basin. To delimit basin boundary, it points out that there are three mainsteps: ① Analysis of basin structure style; ② Processing and interpretation of geophysical data; ③ Integrated basin boundary delimitation by remote sensing technique combined with geophysical data. In the research of basin boundary, remote sensing should be taken as the main means and data integration should be taken as the main thought. Mainly based on remotely sensed and gravity data, the delimitation of the boundary of Baise Basin, China, is given as an example in the paper.